Improvement in fluting-rollers



Y T. Bosman.

Fluting-Bollers.

PaltehtedAprilmsM.

TATES 'r FFICE,

THOMAS RoRJonN,-OE NEw YORK, N. Y., AsSreNoR To GEORGE e. RATES,

OE SAME PLAGE. I

vINIPROVENIENT IN FLUTlNG-ROLLERS.

Speciication forming part of Letters Patent No, 149,526, dated April '7,1874; application filed February 3, 1874.

To all whom 'it may concern:

Be it known that I, THOMAS ROEJOHN, of the city, county, and State ofNew York, have invented an Improvement in Flirting-Rollers, of which thefollowing is a specification:

rlhis invention consists in a pair or combination ofiiuting-rollers formaking vV-shaped iluting, the one of which rollers has its ridges andgrooves of approximately equal triangular shape or construction, whilethe ridges of the other roller are of narrower angular construction, orof Strip-like form, and its grooves of a U Shape or with broad openinner bases, and of greater depth than the ridges of the irst-namedroller, and so that the pitch-line oi the two rollers is at the outeredges of the ridges of the narrow ridged roller and the inner bases ofthe triangular grooves of the other roller, whereby the material to beoperated upon, as it passes in between the rollers, is transformed intoV-Shaped iiuting, and the sides of the iiutes pressed or ironed intoshape by the rubbing or pressing action of the sides of the ridges andtheir outer edges on the maferial throughout the whole length and depthof the iutes, or thereabout, substantially as hereinafter described.

In the drawing, Figure l represents a vertical transverse section on theline as x of a pair of iiuting-rollers constructed in accordance with myimprovement: Fig. 2, a Side or edge view of the same; Fig. 3, a view, inprofile, of the flirting produced; and Fig. 4, a diagram, on an enlargedscale, in illustration of the grooved and ridged Surfaces of therollers.

A is the one, and B the other, of a pair of luting rollers, either ofwhich may be the driver o the other. The one, A, of these rollers hasits flutes formed by ridges a and grooves b of triangular shape, forminga sharp or close junction at the base of the contiguous ridges, and sothat the ridges a, at their base, are of a thickness which approximatesthe cross-dimensions of the grooves b, between the outer edges of theridges. The other roller, B, has its iiutes formed by narrower orStrip-like ridges c and grooves d, of somewhat greater depth than theridges and grooves ot' the roller A, so that the one set of ridges oapproximates an equilateral triangle, While the other ridges c'approximate an isosceles triangle, and the grooves d of the roller Bare of a U shape, or with broad open inner bases.

By this construction of the rollers, the pitchlines e f or" them are atthe outer extremities or edges of the ridges c and inner edges or basesof the grooves I), and a free space is left between the outer edges lofthe ridges a and the inner surfaces or bases of the grooves r'ly for thematerial tobe fluted to freely pass, as required, between the rollerswhile it is iiuted by the ridges, in connection with the grooves of therollers, the outer edges of the ridges c bearing the material closewithin the sharp or narrow inner edges or bases of the grooves b, andthesides of the ridges a c workin g in nearly straight or close contiguitywith each other, thereby exerting a rubbing or ironing action, as itwere, upon opposite sides of the flutes, and making the latter of asharp or V-shaped form.

I claim- The iiuting-roller A, having its ridges ct and `the outer edgesof the ridges c and inner edges of the grooves b, or thereabont, asspecified. THOS. BOBJOHN.

Viitiiesses HENRY T. BROWN, FRED. HAYNES.

